v?Exp2

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 4/28/2026

Version

Public

v?Exp2

Computes the base 2 exponential of vector elements.

Syntax

vhExp2 ( n , a , y );

vhExp2I(n, a, inca, y, incy);

vmhExp2 ( n , a , y , mode );

vmhExp2I(n, a, inca, y, incy, mode);

vsExp2 ( n , a , y );

vsExp2I(n, a, inca, y, incy);

vmsExp2 ( n , a , y , mode );

vmsExp2I(n, a, inca, y, incy, mode);

vdExp2 ( n , a , y );

vdExp2I(n, a, inca, y, incy);

vmdExp2 ( n , a , y , mode );

vmdExp2I(n, a, inca, y, incy, mode);

Include Files

mkl.h

Input Parameters

Name	Type	Description
`n`	const MKL_INT	Specifies the number of elements to be calculated.
`a`	const _Float16* for `vhExp2` const float* for `vsExp2` const _Float16* for `vmhExp2` const float* for `vmsExp2` const double* for `vdExp2` const double* for `vmdExp2`	Pointer to the array containing the input vector `a` .
`inca` , `incy`	const MKL_INT	Specifies increments for the elements of `a` and `y` .
`mode`	const MKL_INT64	Overrides the global VM `mode` setting for this function call. See vmlSetMode (Sets a new mode for VM functions according to the mode parameter and stores the previous VM mode to oldmode.) for possible values and their description.

Output Parameters

Name	Type	Description
`y`	_Float16* for `vhExp2` float* for `vsExp2` _Float16* for `vmhExp2` float* for `vmsExp2` double* for `vdExp2` double* for `vmdExp2`	Pointer to an array containing the output vector `y` .

Description

The v?Exp2 function computes the base 2 exponential of vector elements.

Precision Overflow Thresholds for Real Function v?Exp2

Data Type	Threshold Limitations on Input Parameters
single precision	`a`_i < log ₂ (FLT_MAX)
double precision	`a`_i < log ₂ (DBL_MAX)

See Special Value Notations for the conventions used in this table:

Special values for Real Function v?Exp2(x)

Argument	Result	VM Error Status	Exception
+0	+1
-0	+1
`x` > overflow	∞	VML_STATUS_OVERFLOW	OVERFLOW
`x` < underflow	+0	VML_STATUS_UNDERFLOW	UNDERFLOW
∞	∞
∞	+0
QNAN	QNAN
SNAN	QNAN		INVALID

NOTE:

Exp
Exp10

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Developer Reference for Intel® oneAPI Math Kernel Library for C

v?Exp2

Syntax

Include Files

Input Parameters

Output Parameters

Description